EVERYDAY SCIENCE

Detailed explanation-1: -Earthworm possess 5 pairs heart. Earthworms do not have a genuine heart because they are worms, but they do have aortic arches, which connect ventral and dorsal veins and pump blood.

Detailed explanation-2: -Heartbeats: Worms don’t have just one heart. They have FIVE! But their hearts and circulatory system aren’t as complicated as ours–maybe because their blood doesn’t have to go to so many body parts. Moving around: Worms have two kinds of muscles beneath their skin.

Detailed explanation-3: -Do worms have hearts? Worms possess a heart-like structure called an aortic arch. Five of these arches pump blood around the worm’s body. Earthworms only emerge in wet conditions, they can’t take in oxygen if they dry out.

Detailed explanation-4: -An earthworm has five hearts that are segmented and pump blood throughout its body, ” said Orsmond. She said their structure was provided by a “hydrostatic skeleton” coelomic fluid (fluid within the body cavity) held under pressure and surrounded by muscles. “There are over 5 500 named species of earthworms worldwide.

Detailed explanation-5: -An earthworm has no appendages like legs or arms. The movement is carried out by alternate contraction and relaxation of two sets of muscles present in the body wall. Earthworms do have small structures called setae, on every segment, but they cannot be equated to legs.